Coal mill bed mould sealing device

Abstract

The utility model provides a coal mill bed mould sealing device, which relates to the technical field of coal mills, and comprises a coal mill bed mould main body, the top of the coal mill bed mould main body is attached with a cylinder, the surface of the coal mill bed mould main body is provided with a thread groove, the surface of the cylinder is connected with a sealing assembly, the sealing assembly comprises a bolt, and the bolt is connected with the cylinder. The bottom surface of the bolt is connected with a gasket type pressure sensor, the bottom of the gasket type pressure sensor is connected with a fixing gasket, the outer surface of the bolt is sleeved with a sleeve, a sealing ring is arranged in the sleeve, and one side of the gasket type pressure sensor is electrically connected with an alarm. According to the coal mill bed mould, when the bolt is loosened after being used for a long time, the gasket type pressure sensor can remind an operator to process the bolt in time through the alarm, so that the problem that the service life of the coal mill bed mould main body is affected due to the fact that coal slurry leaks from the periphery of the loosened bolt is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mill technology field especially relates to a coal mill tire plate sealing device. BACKGROUND

[0002] The main role of coal mill is to break and grind coal into coal powder to meet the needs of boiler combustion. At the same time, the coal mill can also adjust the particle size and moisture content of the coal powder according to different process requirements to meet the needs of different production processes.

[0003] Such as the publication number: CN204213330U, a coal mill tire plate sealing device. The coal mill tire plate sealing device includes: fixed assembly, including bolt and nut, bolt is arranged in the positioning hole of coal mill tire plate and cylinder, and passes through coal mill tire plate and cylinder in turn, nut is set on the end of bolt outside the cylinder; Sealing and limiting assembly, set on the bolt and located between the cylinder and the nut, the sealing and limiting assembly includes sealing assembly and limiting piece, the sealing assembly is used for preventing the coal slurry in the cylinder from leaking along the outer periphery of the bolt, and the limiting piece is used for limiting the position of the sealing assembly. According to the coal mill tire plate sealing device of the utility model, the sealing assembly can be prevented from being crushed and invalid, and the service life of the coal mill tire plate sealing device is improved.

[0004] The patent can prevent the sealing assembly from being crushed and invalid, and improve the service life of the coal mill tire plate sealing device, but the existing device will be loose after long time use, and if the operator does not handle in time, the coal slurry will leak along the outer periphery of the bolt, thereby affecting the service life of the coal mill tire plate, therefore, we propose a new type of coal mill tire plate sealing device. Utility model content

[0005] The utility model aims at solving the problem that the existing device will be loose after long time use in prior art, and if the operator does not handle in time, the coal slurry will leak along the outer periphery of the bolt, thereby affecting the service life of the coal mill tire plate.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme: a coal mill tire plate sealing device, including coal mill tire plate main part, the top of coal mill tire plate main part is attached with cylinder, the surface of coal mill tire plate main part is equipped with thread groove, the surface of cylinder is connected with sealing assembly, the sealing assembly includes bolt, the bottom surface of bolt is connected with gasket type pressure sensor, the bottom of gasket type pressure sensor is connected with fixed gasket, the outer surface of bolt is sleeved with sleeve, the inside of sleeve is provided with sealing ring, one side of gasket type pressure sensor is electrically connected with alarm.

[0007] Further, the gasket type pressure sensor and the fixed gasket are both cylindrical in shape.

[0008] Further, the outer surface of the sealing ring is in close contact with the inner wall of the sleeve.

[0009] Further, the inner wall of the sealing ring is in contact with the outer surface of the bolt.

[0010] Further, the protection assembly is arranged on the upper end of the bolt body of the coal mill tire plate and comprises a protective cover.

[0011] Further, the two side ears are connected to the bottom of the protective cover, and the magnetic blocks are inserted into the two groups of side ears.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are that,

[0013] 1. In the utility model, when the bolt is loose after long-term use, the gasket type pressure sensor reminds the operator to process the bolt in time through the alarm, so that the coal slurry does not leak along the outer periphery of the loose bolt, and the service life of the coal mill tire plate body is affected.

[0014] 2. In the utility model, the protective cover is arranged on the surface of the bolt to start the protection of the bolt, the protective cover can effectively isolate the contact between the bolt and the external environment, avoid the rust on the surface of the bolt due to oxidation, and prolong the service life. DRAWINGS

[0015] Figure 1 A three-dimensional structure schematic diagram of the coal mill tire plate sealing device is provided for the utility model;

[0016] Figure 2 An explosion structure schematic diagram of the coal mill tire plate sealing device is provided for the utility model;

[0017] Figure 3 A cross-sectional structure schematic diagram of the coal mill tire plate sealing device is provided for the utility model;

[0018] Figure 4 An explosion structure schematic diagram of the protective cover of the coal mill tire plate sealing device is provided for the utility model.

[0019] Legend: 1, coal mill tire plate body; 2, cylinder; 3, thread groove; 4, sealing assembly; 401, bolt; 402, gasket type pressure sensor; 403, fixed gasket; 404, sleeve; 405, sealing ring; 406, alarm; 5, protection assembly; 501, protective cover; 502, side ear; 503, magnetic block. DETAILED DESCRIPTION

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1, as Figure 1 - Figure 3 As shown, this utility model provides a coal mill tire sealing device, including a coal mill tire body 1, a cylinder 2 attached to the top of the coal mill tire body 1, a threaded groove 3 on the surface of the coal mill tire body 1, a sealing component 4 connected to the surface of the cylinder 2, the sealing component 4 including a bolt 401, a gasket-type pressure sensor 402 connected to the bottom surface of the bolt 401, a fixing gasket 403 connected to the bottom of the gasket-type pressure sensor 402, a sleeve 404 sleeved on the outer surface of the bolt 401, a sealing ring 405 provided inside the sleeve 404, an alarm 406 electrically connected to one side of the gasket-type pressure sensor 402, the gasket-type pressure sensor 402 and the fixing gasket 403 are both cylindrical in shape, the outer surface of the sealing ring 405 is in contact with the inner wall of the sleeve 404, and the inner wall of the sealing ring 405 is in contact with the outer surface of the bolt 401.

[0023] The effect achieved by the entire embodiment 1 is as follows: when in use, first place the sleeve 404 on the surface of the cylinder 2 and insert the sealing ring 405 into the sleeve 404. Then, put the gasket pressure sensor 402 and the fixing gasket 403 on the surface of the bolt 401, and then thread the bolt 401 through the sealing ring 405 and the cylinder 2 and fix it with the threaded groove 3. When the bolt 401 becomes loose after long-term use, the gasket pressure sensor 402 will be sensed and send an electrical signal, so that the alarm 406 can sound an alarm. The alarm 406 reminds the operator to deal with the bolt 401 in time to prevent coal slurry from leaking along the outer periphery of the loose bolt 401, thereby affecting the service life of the coal mill tire plate body 1.

[0024] Example 2, as Figure 1 and Figure 4 As shown, a protective component 5 is provided on the main body 1 of the coal mill tire plate at the top of the bolt 401. The protective component 5 includes a protective cover 501. Side ears 502 are connected to the bottom of both sides of the protective cover 501. Magnetic blocks 503 are inserted into the interior of both sets of side ears 502.

[0025] The effect achieved by the whole embodiment 2 is that after the bolt 401 is fixed, the protective cover 501 can be sleeved on the surface of the bolt 401, and then the magnetic attraction block 503 is penetrated through the side ear 502 to be magnetically attracted and fixed, so that the bolt 401 can be effectively isolated from the contact with the external environment by the protective cover 501, the rust caused by the oxidation of the surface of the bolt 401 is avoided, and the service life of the bolt 401 is prolonged.

[0026] Working principle: when the bolt 401 is loose after long-term use, the gasket type pressure sensor 402 reminds the operator to process the bolt 401 in time through the alarm 406, so that the coal slurry is prevented from leaking along the outer periphery of the loose bolt 401, and the service life of the coal mill tire plate body 1 is affected. The protective cover 501 arranged on the surface of the bolt 401 can start the protection of the bolt 401, the protective cover 501 can effectively isolate the contact between the bolt 401 and the external environment, the rust caused by the oxidation of the surface of the bolt 401 is avoided, and the service life of the bolt 401 is prolonged.

[0027] The above is only a preferred embodiment of the present application, and does not limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments still belongs to the protection scope of the present application technical scheme.

Claims

1. A mill shoe sealing arrangement for a coal mill, comprising a mill shoe body (1), characterised in that: The top of the coal mill tire plate body (1) is attached with a cylinder (2), the surface of the coal mill tire plate body (1) is provided with a threaded groove (3), and the surface of the cylinder (2) is connected with a sealing assembly (4); The sealing assembly (4) comprises a bolt (401), the bottom surface of the bolt (401) is connected with a gasket type pressure sensor (402), the bottom of the gasket type pressure sensor (402) is connected with a fixed gasket (403), the outer surface of the bolt (401) is sleeved with a sleeve (404), the inside of the sleeve (404) is provided with a sealing ring (405), and one side of the gasket type pressure sensor (402) is electrically connected with an alarm (406).

2. The coal mill gasketing arrangement of claim 1, wherein: The shapes of the gasket type pressure sensor (402) and the fixed gasket (403) are both cylindrical.

3. The coal mill gasketing arrangement of claim 2, wherein: The outer surface of the sealing ring (405) is attached with the inner wall of the sleeve (404).

4. The coal mill gasketing arrangement of claim 3, wherein: The inner wall of the sealing ring (405) is in contact with the outer surface of the bolt (401).

5. The coal mill gasketing device of claim 1, wherein: The coal mill tire plate body (1) is provided with a protection assembly (5) at the top of the bolt (401), and the protection assembly (5) comprises a protection cover (501).

6. The coal mill gasketing arrangement of claim 5, wherein: The bottom of the protection cover (501) is connected with a side ear (502) on both sides, and the inside of the two groups of side ears (502) is inserted with a magnetic block (503).

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